netdev - [PATCH net-next 4/6] selftests: mlxsw: qos_lib: Add a wrapper for running mlnx

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Date:   Wed, 30 Sep 2020 12:49:10 +0200
From:   Petr Machata <petrm@...dia.com>
To:     <netdev@...r.kernel.org>
CC:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Ido Schimmel <idosch@...dia.com>,
        Petr Machata <petrm@...dia.com>
Subject: [PATCH net-next 4/6] selftests: mlxsw: qos_lib: Add a wrapper for running mlnx_qos

mlnx_qos is a script for configuration of DCB. Despite the name it is not
actually Mellanox-specific in any way. It is currently the only ad-hoc tool
available (in contrast to a daemon that manages an interface on an ongoing
basis). However, it is very verbose and parsing out error messages is not
really possible. Add a wrapper that makes it easier to use the tool.

Signed-off-by: Petr Machata <petrm@...dia.com>
---
 .../testing/selftests/drivers/net/mlxsw/qos_lib.sh | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/tools/testing/selftests/drivers/net/mlxsw/qos_lib.sh b/tools/testing/selftests/drivers/net/mlxsw/qos_lib.sh
index faa51012cdac..0bf76f13c030 100644
--- a/tools/testing/selftests/drivers/net/mlxsw/qos_lib.sh
+++ b/tools/testing/selftests/drivers/net/mlxsw/qos_lib.sh
@@ -82,3 +82,17 @@ bail_on_lldpad()
 		fi
 	fi
 }
+
+__mlnx_qos()
+{
+	local err
+
+	mlnx_qos "$@" 2>/dev/null
+	err=$?
+
+	if ((err)); then
+		echo "Error ($err) in mlnx_qos $@" >/dev/stderr
+	fi
+
+	return $err
+}
-- 
2.20.1